Vacation

function vacation(input) {

    let needMoney = Number(input[0]);
    let availableMoney = Number(input[1]);

    let index = 2;
    let command = input[index];

    let totalDays = 0;
    let spendDays = 0;

    while (availableMoney < needMoney) {
        totalDays++;
        index++;

        if (command === 'spend') {
            spendDays++;

            if (spendDays === 5) {
                console.log(`You can't save the money.`);
                console.log(totalDays);
                break;
            }

            let moneyToSpend = Number(input[index]);
            availableMoney -= moneyToSpend;

            if (availableMoney < 0) {
                availableMoney = 0;
            }

        } else if (command === 'save') {
            spendDays = 0;
            let moneyToSave = Number(input[index]);
            availableMoney += moneyToSave;
        }

        index++;
        command = input[index];
    }

    if (availableMoney >= needMoney) {
        console.log(`You saved the money for ${totalDays} days.`);
    }

}

vacation(["2000", "1000", "spend", "1200", "save", "2000"])